Button description Uniforms not wornComment With the exception of conductors' caps, the North Metropolitan Tramways Company did not issue uniforms (see link), so marked uniform buttons never existed.

The button pictured is actually an issue of the 'North Metropolitan Electric Power Supply Company', which supplied power to the Metropolitan Electric Tramways and electricity to large areas of the capital and surrounding counties. The company traded under the name 'NorthMet', and the standard reference work on the 'bullseye' - A Logo for London - shows a 'bullseye' device used by this company (Page 48). The distinctive style of lettering seen on this button only made its appearance in 1908/9, being introduced at the behest of the District Railway (a constituent of the Underground Electric Railways Company of London - the 'Underground Group') to promote London's underground railways. The group eventually incorporated this style of lettering into its 'blue bar and red circle' logo - the famous London Underground 'bullseye' - a device which was subsequently used by numerous companies within the group.